73148513 has 2 divisors, whose sum is σ = 73148514. Its totient is φ = 73148512.

The previous prime is 73148507. The next prime is 73148521. The reversal of 73148513 is 31584137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40806544 + 32341969 = 6388^2 + 5687^2 .

It is a cyclic number.

It is not a de Polignac number, because 73148513 - 2¹⁰ = 73147489 is a prime.

It is a super-2 number, since 2×73148513² = 10701409908222338, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 73148513.

It is not a weakly prime, because it can be changed into another prime (73148503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36574256 + 36574257.

It is an arithmetic number, because the mean of its divisors is an integer number (36574257).

Almost surely, 2^73148513 is an apocalyptic number.

It is an amenable number.

73148513 is a deficient number, since it is larger than the sum of its proper divisors (1).

73148513 is an equidigital number, since it uses as much as digits as its factorization.

73148513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 73148513 is about 8552.6903954253. The cubic root of 73148513 is about 418.2171460144.

The spelling of 73148513 in words is "seventy-three million, one hundred forty-eight thousand, five hundred thirteen".